TransCanada Corp. shut down its Keystone pipeline at about 6 a.m. CST Nov. 16 after a pressure drop was detected in its operating system resulting from an oil leak that is now under investigation. The estimated volume of the leak is 5,000 bbl. The section of pipe along a right-of-way roughly 35 miles south of the Ludden pump station in Marshall County (about 3 miles south of Amherst, SD) was isolated within 15 min, TransCanada reported. 

Source: News